It's about identifying healthy boundaries, and apparently most people can't do that when it comes to smart phones.

We use ours like regular phone junkies to stay connected/dick around/navigate life throughout the work day. But we use gps/time triggers to shut off notifications during our time most likely to be used for deep focus, and/or enable airplane mode at night, when at home, on dates, or with family.

That way the silence is natural, and we don't have to rely on our own self-control to do the right thing.